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Table 2 The outlier (over 3°) ratio of post-operative component’s coronal and sagittal alignment

From: Comparison of post-operative three-dimensional and two-dimensional evaluation of component position for total knee arthroplasty

   3D evaluation 2D evaluation p value
Femoral component Coronal alignment (%) 13.8 7.7 0.258
  (9 cases) (5 cases)  
Sagittal alignment (%) 41.5 6.2 < 0.001
  (27 cases) (4 cases)  
Tibial component Coronal alignment (%) 24.6 7.7 0.009
  (16 cases) (5 cases)  
Sagittal alignment (%) 47.7 10.8 < 0.001
  (31 cases) (7 cases)  
  1. Values are presented as number only. The statistical significance was set at p < 0.05
  2. 3D three-dimensional, 2D two-dimensional